# 6.1 字典
person = {
    'first_name' : 'zhangsan',
    'last_name' : 'nigula',
    'age' : 35,
    'city' : 'dongbei',
    }
print(f"His first_name is {person['first_name']}.")
print(f"His last_name is {person['last_name']}.")
print(f"He's {person['age']}.")
print(f"He comes from {person['city']}.")
